Betty Boop - Training Pigeons - 1936
Plot: This animated short film from Fleischer Studios features Betty Boop training a group of carrier pigeons. She and her grandfather, Grampy, work together to teach the pigeons how to fly in formation and deliver messages. One of the pigeons, however, is a lazy and mischievous bird who would rather play than do his job, and Betty must find a way to get him to cooperate.